Modular hydrogen power system power pack based on solid-state hydrogen storage technology

Abstract

The application relates to a modular hydrogen power system power supply package based on a solid-state hydrogen storage technology, which comprises a hydrogen fuel cell power package box and at least one solid-state hydrogen storage energy supplementing box; the solid-state hydrogen storage energy supplementing box comprises a plurality of first solid-state hydrogen storage bottles, a first multi-way mixing valve, an electromagnetic valve and a pressure regulating valve arranged in the solid-state hydrogen storage energy supplementing box; the plurality of first solid-state hydrogen storage bottles are connected with the first multi-way mixing valve respectively, the first multi-way mixing valve is connected with the electromagnetic valve, and the pressure regulating valve is connected with the electromagnetic valve and the hydrogen fuel cell power package box respectively. The power module and the energy storage and energy supplementing module are arranged separately, the fuel cell system structure is greatly simplified, the hydrogen storage module can be connected in series through multiple modules, different numbers and different capacities of solid-state hydrogen storage bottles are configured to realize sufficient hydrogen supply, the problem of low endurance of the hydrogen energy power supply package can be effectively solved, and obvious cost advantages are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a modular hydrogen power system power supply package based on solid-state hydrogen storage technology. BACKGROUND

[0002] Unlike traditional open-air cooling fuel cells, sealed air-cooled fuel cells are a type of fuel cell technology that achieves cooling and reaction through an internal air circulation system in a sealed structure. The core is to separate the air required for cooling and the air required for reaction, avoiding direct exchange of air with the external environment. Its working principle is to generate electricity, water and heat through the electrochemical reaction of hydrogen (as fuel) and oxygen (from air). The core components of the battery include anode and cathode composed of bipolar plate, gas diffusion layer, catalyst and proton exchange membrane. Hydrogen is oxidized at the anode, releasing electrons and generating protons; electrons pass through the external circuit to generate current, while protons pass through the proton exchange membrane to the cathode and react with oxygen to generate water.

[0003] Sealed air-cooled fuel cells drive air circulation inside the battery through a fan, and rely on cooling fans to remove heat generated by the stack. Compared with the auxiliary components of liquid-cooled stacks, the power consumption is greatly reduced, and the environmental adaptability and stack life are better than open air-cooled stacks. The many advantages of sealed air-cooled fuel cells make them more attractive in portable and small mobile power applications. Compared with liquid cooling systems (which require water pumps, cooling liquids and cooling fans, etc., with an energy consumption ratio of about 8% to 12%), the core energy consumption of the closed air-cooled system comes only from the fan (with an energy consumption ratio of about 3% to 5%), and there is no need for complex liquid pipe maintenance; At the same time, its volume and weight are 40% to 60% smaller than liquid cooling systems, making it more suitable for small and medium-sized equipment. Secondly, air-cooled fuel cells can start quickly and are suitable for applications that require instant power. Thirdly, its design is flexible and suitable for a variety of environmental conditions, making it perform well in portable electronic devices, electric vehicles and outdoor power generation. And its operating cost is relatively low, with good energy density, making it a popular choice for clean energy solutions.

[0004] Existing hydrogen fuel cell energy power packs are widely used in two-wheeled scooters, three-wheeled vehicles, backup and emergency power generation. Because the use scenario has high requirements for the weight and volume of the power pack itself, and it is required to reduce the energy consumption of auxiliary components as much as possible. Therefore, in existing solutions and products, a certain capacity of lithium battery is often configured in the hydrogen energy power pack to assist in starting auxiliary components or directly driving the load, which will further increase the weight and volume of the hydrogen energy power pack; In addition, in scenarios where the load power demand is large, only by further increasing the output power of the stack can the application demand be met. SUMMARY

[0005] Based on this, the embodiment of the present application provides a modular hydrogen power system power supply package based on solid-state hydrogen storage technology, aiming at solving the problems of existing hydrogen energy battery package, such as fast energy supplement and endurance time.

[0006] To achieve the above object, the embodiment of the present application provides the following technical scheme: a modular hydrogen power system power supply package based on solid-state hydrogen storage technology, comprising a hydrogen fuel cell power package box and at least one solid-state hydrogen storage energy supplement box; the solid-state hydrogen storage energy supplement box comprises a plurality of first solid-state hydrogen storage bottles, a first multi-way mixing valve, a solenoid valve and a pressure regulating valve arranged in the solid-state hydrogen storage energy supplement box; the plurality of first solid-state hydrogen storage bottles are respectively connected with the first multi-way mixing valve, and the first multi-way mixing valve is connected with the solenoid valve; the pressure regulating valve is respectively connected with the solenoid valve and the hydrogen fuel cell power package box.

[0007] As a preferred embodiment, the solenoid valve and the pressure regulating valve are respectively connected with a valve cable interface, the valve cable interface is connected with an FCU in the hydrogen fuel cell power package box; and the valve cable interface is arranged between the hydrogen fuel cell power package box and the solid-state hydrogen storage energy supplement box.

[0008] As a preferred embodiment, the solid-state hydrogen storage energy supplement box further comprises a plurality of second solid-state hydrogen storage bottles, a second multi-way mixing valve and a hydrogen storage three-way valve arranged in the solid-state hydrogen storage energy supplement box; the plurality of second solid-state hydrogen storage bottles are respectively connected with the second multi-way mixing valve; and the hydrogen storage three-way valve is respectively connected with the first multi-way mixing valve, the second multi-way mixing valve and the solenoid valve.

[0009] As a preferred embodiment, the solid-state hydrogen storage energy supplement box further comprises a detachable base and a plurality of partition supports, the detachable base is arranged at the bottom of the solid-state hydrogen storage energy supplement box, the plurality of partition supports are arranged at equal intervals in the solid-state hydrogen storage energy supplement box, and the partition supports are arranged in abutment with the detachable base; and the first solid-state hydrogen storage bottles and the second solid-state hydrogen storage bottles are fixed in the solid-state hydrogen storage energy supplement box through the partition supports.

[0010] As a preferred embodiment, a plurality of first fixing holes and a plurality of second fixing holes are arranged on each partition support, the plurality of first fixing holes are arranged in parallel and in rows, the plurality of second fixing holes are arranged in parallel and in rows, and the first fixing holes are arranged above the second fixing holes.

[0011] As a preferred embodiment, the first fixing holes are arranged one-to-one with the first solid-state hydrogen storage bottles, and the first solid-state hydrogen storage bottles are fixed to the partition support through the first fixing holes; the second fixing holes are arranged one-to-one with the second solid-state hydrogen storage bottles, and the second solid-state hydrogen storage bottles are fixed to the partition support through the second fixing holes.

[0012] As a preferred embodiment, gaps are arranged between adjacent first fixing holes, between adjacent second fixing holes, and between the first fixing holes and the second fixing holes; the first fixing holes are arranged in a manner suitable for the first solid-state hydrogen storage bottles, and the second fixing holes are arranged in a manner suitable for the second solid-state hydrogen storage bottles.

[0013] In the embodiments of the present application, the bottle mouth of the first solid-state hydrogen storage bottle and the bottle mouth of the second solid-state hydrogen storage bottle are arranged close to the valve cable interface end, so as to facilitate the connection and layout of the cable and the pipeline.

[0014] As a preferred embodiment, the solid-state hydrogen storage energy supplement box is arranged above the hydrogen fuel cell power pack box; when a plurality of solid-state hydrogen storage energy supplement boxes are arranged, the plurality of solid-state hydrogen storage energy supplement boxes are stacked from top to bottom above the hydrogen fuel cell power pack box.

[0015] As a preferred embodiment, when a plurality of solid-state hydrogen storage energy supplement boxes are arranged, the pressure regulating valve of each solid-state hydrogen storage energy supplement box is connected with a stack inlet multi-way valve, and the stack inlet multi-way valve is connected with the hydrogen fuel cell power pack box.

[0016] As a preferred embodiment, when a plurality of solid-state hydrogen storage energy supplement boxes are arranged, the valve cable interface of each solid-state hydrogen storage energy supplement box is connected with the hydrogen fuel cell power pack box.

[0017] As a preferred embodiment, the hydrogen fuel cell power pack box is provided with at least one closed fuel cell air-cooled stack, the FCU, a fan, a direct current power conversion output device, and a support plate; the support plate is fixed to the bottom of the hydrogen fuel cell power pack box through a plurality of support structure members; the closed fuel cell air-cooled stack, the FCU, and the fan are arranged on the support plate, and the direct current power conversion output device is arranged below the FCU.

[0018] As a preferred embodiment, the FCU and the fan are arranged adjacently, and the FCU and the fan are arranged close to the valve cable interface; a gap is arranged between the support plate and the bottom of the hydrogen fuel cell power pack box, and the direct current power conversion output device is accommodated in the gap.

[0019] In a preferred embodiment, a cooling fan is provided on the top of the closed-loop fuel cell air-cooled stack; a monitoring and operation device is provided on the outer side of the hydrogen fuel cell power pack near the fan end.

[0020] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: This application separates the power module and the energy storage and replenishment module, and adopts a closed-loop air-cooled fuel cell, which greatly simplifies the fuel cell system structure. This avoids the problem of open-loop air-cooled fuel cells where high-velocity airflow carries away a large amount of water from the stack, causing the proton exchange membrane to dry out and resulting in significant ohmic losses and reduced stack performance. Furthermore, the modular structure allows for the configuration of closed-loop air-cooled fuel cell stacks of different power ratings or the use of a dual-stack system for specific application scenarios. The hydrogen storage module uses solid-state hydrogen storage for replenishment, relying on the heat generated by the fuel cell in the power module to release hydrogen to supply the reaction gas required for the stack's output power. The hydrogen storage module can be connected in series with multiple modules, and by configuring different numbers and capacities of solid-state hydrogen storage cylinders, a sufficient hydrogen supply can be achieved, effectively solving the problem of low driving time in hydrogen fuel cell power packs. This application has a simple, stable, and reliable structure. Compared with similar products on the market, this application's structure greatly reduces production costs while ensuring product performance, exhibiting a significant cost advantage, higher practicality and economy, and can be produced and used as a general-purpose product. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a modular hydrogen power system power pack based on solid-state hydrogen storage technology according to an embodiment of the present invention.

[0023] Figure 2 for Figure 1 A schematic diagram of the internal structure of a solid-state hydrogen storage recharge tank;

[0024] Figure 3 for Figure 1 A schematic diagram of the internal structure of a hydrogen fuel cell pack;

[0025] Figure 4 for Figure 3 A schematic diagram of the structure of a closed-loop fuel cell air-cooled stack;

[0026] Figure 5 for Figure 1A system connection structure schematic diagram of a modular hydrogen power system power pack based on solid-state hydrogen storage technology of the present application;

[0027] Figure 6 A system connection structure schematic diagram of a modular hydrogen power system power pack based on solid-state hydrogen storage technology of the present application;

[0028] Figure 7 A system connection structure schematic diagram of a modular hydrogen power system power pack based on solid-state hydrogen storage technology of the present application;

[0029] Figure 8 A Figure 7 A cross-sectional structure schematic diagram of a modular hydrogen power system power pack based on solid-state hydrogen storage technology of the present application;

[0030] Figure 9 A Figure 8 A working principle schematic diagram of a modular hydrogen power system power pack based on solid-state hydrogen storage technology of the present application;

[0031] Figure 10 A whole structure schematic diagram of a modular hydrogen power system power pack based on solid-state hydrogen storage technology of the present application.

[0032] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work under the premise that the relative concepts of the present application can be implemented, belong to the protection scope of the present application.

[0034] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, top, bottom, …), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications will also change accordingly.

[0035] In this application, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise expressly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a mediating element. When an element is considered to be "connected" to another element, it can be directly connected to another element or a mediating element can exist at the same time.

[0037] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

[0038] The common schemes of hydrogen energy power packs disclosed in the prior art include: ①gaseous hydrogen storage bottle configured in the power pack: commonly used in medium and large-sized hydrogen energy unmanned aerial vehicle products, the power pack demand of such products is moderate, the expansion capability is poor, and the self-weight requirement is large. ②Hydrogen energy quadruped robot: both gaseous and solid hydrogen storage schemes are widely used, the power output range of the power pack is 500W-5kW, and the expansion performance is moderate. ③Three-wheeled vehicle, heavy load transport vehicle, unmanned delivery vehicle, mobile power source, etc.: due to the good space expansion and the application demand of long endurance and large weight load, it is very suitable to use a high-power hydrogen energy power pack.

[0039] At present, the cathode reaction zone of air-cooled fuel cell is mostly open, that is, the cathode flow channel is directly in contact with the environment. Direct air blowing on the cathode side diffusion layer of the membrane electrode will make the proton exchange membrane in a water-deficient state, affecting the performance and service life of the stack. On the other hand, the traditional liquid-cooled fuel cell stack needs to be matched with complex liquid pipelines and maintained, and its volume and weight are large, requiring additional auxiliary components with high power consumption.

[0040] Hydrogen power packs equipped with air-cooled fuel cells (open and closed air-cooled) mostly adopt the form of power modules and hydrogen storage modules integrated into power packs, which has the advantage of high integration, which is conducive to saving space for corresponding products, and is suitable for unmanned aerial vehicles, small robots and two-wheeled vehicles, etc. However, in scenarios with high power output requirements, small power stacks and less hydrogen storage capacity will greatly limit their capabilities.

[0041] There is a lack of battery replacement mode similar to lithium battery PACK power pack in the hydrogen power pack market. Faster energy replenishment mode is conducive to quick energy replenishment of power pack and load end, and the modular hydrogen power pack mode with separate power output and energy replenishment can match appropriate stack power according to accurate use scenarios, which is better than traditional hydrogen power packs in expandability. The supporting hydrogen replenishment scheme adopted by hydrogen power packs is mostly gaseous hydrogen storage cylinders, which still has shortcomings in safety, and there are few system connection schemes between power packs and gas cylinders currently disclosed, and the research is not mature.

[0042] Specifically, as shown in Figures 1 to 5 The technical scheme of the hydrogen power system power pack based on solid-state hydrogen storage technology is as follows: a hydrogen fuel cell power pack box 10 and at least one solid-state hydrogen storage energy supplementing box 20; the solid-state hydrogen storage energy supplementing box 20 includes a plurality of first solid-state hydrogen storage cylinders 21, a first multi-way mixing valve 22, a solenoid valve 23 and a pressure regulating valve 24 arranged in the solid-state hydrogen storage energy supplementing box 20; the plurality of first solid-state hydrogen storage cylinders 21 are respectively connected with the first multi-way mixing valve 22, and the first multi-way mixing valve 22 is connected with the solenoid valve 23; the pressure regulating valve 24 is respectively connected with the solenoid valve 23 and the hydrogen fuel cell power pack box 10.

[0043] As a preferred embodiment, the solenoid valve 23 and the pressure regulating valve 24 are respectively connected with a valve cable interface 25, the valve cable interface 25 is connected with an FCU 11 in the hydrogen fuel cell power pack box 10; the valve cable interface 25 is arranged between the hydrogen fuel cell power pack box 10 and the solid-state hydrogen storage energy supplementing box 20.

[0044] As a preferred embodiment, the solid-state hydrogen storage energy supplementing box 20 further includes a plurality of second solid-state hydrogen storage cylinders 26, a second multi-way mixing valve 27 and a hydrogen storage three-way valve 28 arranged in the solid-state hydrogen storage energy supplementing box 20; the plurality of second solid-state hydrogen storage cylinders 26 are respectively connected with the second multi-way mixing valve 27; the hydrogen storage three-way valve 28 is respectively connected with the first multi-way mixing valve 22, the second multi-way mixing valve 27 and the solenoid valve 23.

[0045] In the embodiments of the present application, the first multi-way mixing valve 22 can be a three-way mixing valve, a four-way mixing valve, or a five-way mixing valve, etc. according to the number of the first solid-state hydrogen storage bottles 21; the second multi-way mixing valve 27 can be a three-way mixing valve, a four-way mixing valve, or a five-way mixing valve, etc. according to the number of the second solid-state hydrogen storage bottles 26. The number of the first solid-state hydrogen storage bottles 21 and the number of the second solid-state hydrogen storage bottles 26 can be the same or different. The bottle opening of one of the first solid-state hydrogen storage bottles 21 is provided with a solid-state hydrogen storage valve assembly A, and the connection between the hydrogen storage bottle groups relies on the solid-state hydrogen storage valve assembly for series connection, so as to achieve greater hydrogen flow and meet the hydrogen flow demand of the electric pile; the assembly is not limited to a three-way, four-way or multi-way valve, and can be selected according to the number of the hydrogen storage bottles.

[0046] As a preferred embodiment, the solid-state hydrogen storage energy supplement box 20 further comprises a detachable base 29 and a plurality of partition supports 30, the detachable base 29 is arranged at the bottom of the solid-state hydrogen storage energy supplement box 20, a plurality of the partition supports 30 are arranged at equal intervals in the solid-state hydrogen storage energy supplement box 20, and the partition supports 30 are arranged in abutment with the detachable base 29; the first solid-state hydrogen storage bottles 21 and the second solid-state hydrogen storage bottles 26 are both fixed in the solid-state hydrogen storage energy supplement box 20 through the partition supports 30.

[0047] As shown in the drawings, Figure 5 When one solid-state hydrogen storage energy supplement box is used to provide hydrogen for the closed fuel cell system, the main working principle in the hydrogen storage box is that the solid-state hydrogen storage bottles release the hydrogen in the tank when receiving the waste heat generated by the closed fuel cell air-cooled pile; in this embodiment, the hydrogen storage bottles form a hydrogen storage energy supplement system in the form of two strings of two, two first solid-state hydrogen storage bottles 21 are connected through a first multi-way mixing valve 22, the remaining two hydrogen bottles are connected in the same way, and finally merged through a hydrogen storage three-way valve, and then respectively pass through solenoid valves (control hydrogen closing or release) and pressure regulating valves to reach the closed fuel cell air-cooled pile. The opening and closing signals of the solenoid valves and the pressure regulating valves of different solid-state hydrogen storage energy supplement boxes 20 are transmitted to the FCU in the hydrogen fuel cell power pack box 10 through the valve cable interface for control.

[0048] As a preferred embodiment, a plurality of first fixing holes (not marked in the drawings) and a plurality of second fixing holes (not marked in the drawings) are arranged on each of the partition supports 30, a plurality of the first fixing holes are arranged in parallel and in rows, a plurality of the second fixing holes are arranged in parallel and in rows, and the first fixing holes are arranged above the second fixing holes.

[0049] As a preferred embodiment, the first fixing holes are arranged one-to-one with the first solid-state hydrogen storage bottles 21, and the first solid-state hydrogen storage bottles 21 are fixed to the partition support 30 through the first fixing holes; the second fixing holes are arranged one-to-one with the second solid-state hydrogen storage bottles 26, and the second solid-state hydrogen storage bottles 26 are fixed to the partition support 30 through the second fixing holes.

[0050] As a preferred embodiment, gaps are arranged between adjacent first fixing holes, between adjacent second fixing holes, and between the first fixing holes and the second fixing holes; the first fixing holes are arranged in adaptation with the first solid-state hydrogen storage bottles 21, and the second fixing holes are arranged in adaptation with the second solid-state hydrogen storage bottles 26.

[0051] The solid-state hydrogen storage bottle group is a main unit for storing hydrogen, and its working principle is to heat the tank body by hot air discharged from a closed air-cooled fuel cell, so as to release hydrogen from the hydrogen storage bottle group; the partition support is used for fixing the hydrogen bottle to prevent relative sliding; the hydrogen storage tank body can be expanded in size through a stacking mode, and the series connection is realized by detaching the detachable base of the solid-state hydrogen storage energy supplement tank. The connection between the hydrogen storage bottle groups relies on the series connection of the solid-state hydrogen storage valve assembly.

[0052] In the embodiment of the present application, the bottle mouth of the first solid-state hydrogen storage bottle 21 and the bottle mouth of the second solid-state hydrogen storage bottle 26 are arranged close to the valve cable interface 25 end, so as to facilitate the connection and layout of the cable and pipeline.

[0053] As a preferred embodiment, the solid-state hydrogen storage energy supplement tank 20 is arranged above the hydrogen fuel cell power pack tank 10; when a plurality of solid-state hydrogen storage energy supplement tanks 20 are arranged, the plurality of solid-state hydrogen storage energy supplement tanks 20 are stacked from top to bottom above the hydrogen fuel cell power pack tank 10. The solid-state hydrogen storage energy supplement tank 20 is fixed and locked above the hydrogen fuel cell power pack tank 10 by means of screws or bayonets and other various non-limiting ways. The solid-state hydrogen storage energy supplement tank can realize large-capacity hydrogen supplement through multi-layer stacking, so as to improve the endurance time of the hydrogen fuel cell power pack.

[0054] As a preferred embodiment, as shown in Figures 6 to 7 As a preferred embodiment, as shown in

[0055] As a preferred embodiment, as shown in Figure 8As shown, when the solid-state hydrogen storage energy supplement tank 20 is provided with multiple, the valve cable interface 25 of each solid-state hydrogen storage energy supplement tank 20 is connected with the hydrogen fuel cell power pack tank 10. The electromagnetic valve and pressure regulating valve in the solid-state hydrogen storage energy supplement tank 20 need to rely on the electrical signal control issued by the FCU. Figure 8 A schematic diagram of the three-layer modular solid-state hydrogen storage energy supplement tank 20 stack and valve cable connection is shown. The valve cable pipeline 50 is used to connect each stacked solid-state hydrogen storage energy supplement tank 20. The hardware line electrical signal connection is realized through the valve cable interface 25 at the junction of the pipeline and the tank body. Through this connection mode, the FCU unit in the hydrogen fuel cell power pack tank 10 can control the release pressure and flow of the hydrogen cylinder group in each solid-state hydrogen storage energy supplement tank 20.

[0056] As shown, Figure 9 The solid-state hydrogen storage energy supplement mode is used. The heat generated by the fuel cell in the power module is used to release hydrogen to supply the reaction gas required for the output power of the stack. The working mode between the hydrogen storage module and the hydrogen power module is as follows: the cooling fan blows the heat generated by the stack into the solid-state hydrogen storage energy supplement tank. At the same time, the hot air simultaneously heats the tank body in the solid-state hydrogen storage energy supplement tank after multiple solid-state hydrogen storage energy supplement tanks are stacked. Finally, the hot air is discharged from the upper end of the tank body.

[0057] As shown, Figures 6 to 7 When the solid-state hydrogen storage energy supplement tank 20 is provided with multiple, the solid-state hydrogen storage energy supplement tank 20 can be configured with the same number and capacity of solid-state hydrogen storage bottles. Alternatively, different numbers and capacities of solid-state hydrogen storage bottles can be configured according to actual use needs, which can effectively solve the problem of low endurance time of the hydrogen energy power pack.

[0058] As a preferred embodiment, the hydrogen fuel cell power pack tank 10 is provided with at least one closed fuel cell air-cooled stack 12 (the total output power of the stack can be 5kW or higher), the FCU 11, the fan 13, the direct current power conversion output device 14 and the support plate 15; the support plate 15 is fixed to the bottom of the hydrogen fuel cell power pack tank 10 through a plurality of support structure members 16; the closed fuel cell air-cooled stack 12, the FCU 11 and the fan 13 are arranged on the support plate 15, and the direct current power conversion output device 14 is arranged below the FCU 11.

[0059] As a preferred embodiment, the FCU 11 and the fan 13 are arranged adjacent to each other, and the FCU 11 and the fan 13 are arranged close to the valve cable interface 25; a gap (not marked in the figure) is provided between the support plate 15 and the bottom of the hydrogen fuel cell power pack tank 10, and the direct current power conversion output device 14 is accommodated in the gap.

[0060] As a preferred embodiment, the top of the closed fuel cell air-cooled stack 12 is provided with a cooling fan 17; the hydrogen fuel cell power pack box 10 is provided with a monitoring operation device 18 on the outer side of the one end of the fan 13. In this application, the cooling fan 17 is fixed on the closed fuel cell air-cooled stack 12 by a wind shield.

[0061] The air required for the reaction of the closed fuel cell air-cooled stack is provided by the fan 13, which is simpler in structure than the oxygen supply system of the traditional liquid-cooled fuel cell stack, and can greatly save system power consumption compared with the air compressor. The FCU (lithium battery pack electrical cabinet) 11 is configured with a fuel cell power system control hardware FCU and a starting energy supply hardware small lithium battery pack, which is mainly used for the starting of the fan 13 and the starting of the cooling fan 17. After the closed air-cooled fuel cell is normally started, the energy consumption of the two is provided by the air-cooled stack. The support structure 16 is used to support the top device and make the air-cooled stack have a certain air inlet distance from the bottom, which is more beneficial to heat dissipation. The working air direction of the cooling fan is the bottom air inlet and the top air outlet. The voltage output by the air-cooled stack is boosted (the voltage is raised, and the specific value is determined by the use scene and the input voltage of the load) by the bottom DC power conversion output device 14 and then output to the load end for work. The monitoring operation device is used to monitor the basic condition parameters (temperature, pressure, air blower speed, etc.) of the power system, and can realize the operation of the working condition switching of the stack through touch or button operation.

[0062] In the embodiment of the application, a closed air-cooled fuel cell stack with different power sizes can be configured according to specific use scenes, or a double-stack system (such as Figure 10 as shown, a double-stack system is used).

[0063] In the description of the specification, the description referring to the terms "an embodiment", "an example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0064] In addition, it should be understood that although the specification is described in terms of embodiments, each embodiment does not necessarily contain only one independent technical solution, and the specification is described only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0065] The above only describes the preferred embodiments of the application, and does not limit the patent scope of the application. Any equivalent structural transformation made by using the content of the specification and drawings, or direct / indirect application in other related technical fields within the inventive concept of the application is included in the patent protection scope of the application.

Claims

1. A modular hydrogen power system power pack based on solid-state hydrogen storage technology, characterized in that, The system includes a hydrogen fuel cell power pack and at least one solid hydrogen storage recharge tank. The solid hydrogen storage recharge tank includes several first solid hydrogen storage cylinders, a first multi-way mixing valve, a solenoid valve, and a pressure regulating valve disposed within the tank. The several first solid hydrogen storage cylinders are respectively connected to the first multi-way mixing valve, and the first multi-way mixing valve is connected to the solenoid valve. The pressure regulating valve is respectively connected to the solenoid valve and the hydrogen fuel cell power pack. The solid-state hydrogen storage replenishment box also includes several second solid-state hydrogen storage cylinders, a second multi-way mixing valve, and a hydrogen storage three-way valve disposed within the solid-state hydrogen storage replenishment box; the several second solid-state hydrogen storage cylinders are respectively connected to the second multi-way mixing valve; the hydrogen storage three-way valve is respectively connected to the first multi-way mixing valve, the second multi-way mixing valve, and the solenoid valve; The solid hydrogen storage recharge box is disposed above the hydrogen fuel cell power pack box; when there are multiple solid hydrogen storage recharge boxes, the multiple solid hydrogen storage recharge boxes are stacked on top of the hydrogen fuel cell power pack box from top to bottom; The hydrogen fuel cell power pack contains at least one closed-loop fuel cell air-cooled stack, FCU, fan, DC power conversion output device and support plate; the support plate is fixed to the bottom of the hydrogen fuel cell power pack by several support structural components; the closed-loop fuel cell air-cooled stack, the FCU and the fan are all mounted on the support plate, and the DC power conversion output device is located below the FCU.

2. The modular hydrogen power system power pack based on solid-state hydrogen storage technology according to claim 1, characterized in that, The solenoid valve and the pressure regulating valve are respectively connected to the valve cable interface, which is connected to the FCU inside the hydrogen fuel cell power pack; the valve cable interface is located between the hydrogen fuel cell power pack and the solid hydrogen storage replenishment box.

3. The modular hydrogen power system power pack based on solid-state hydrogen storage technology according to claim 1, characterized in that, The solid-state hydrogen storage recharge box also includes a detachable base and several partition supports. The detachable base is located at the bottom of the solid-state hydrogen storage recharge box, and the several partition supports are equally spaced inside the solid-state hydrogen storage recharge box, with the partition supports abutting against the detachable base. The first solid-state hydrogen storage cylinder and the second solid-state hydrogen storage cylinder are both fixed inside the solid-state hydrogen storage recharge box by the partition supports.

4. The modular hydrogen power system power pack based on solid-state hydrogen storage technology according to claim 1, characterized in that, When multiple solid-state hydrogen storage recharge boxes are provided, the pressure regulating valve of each solid-state hydrogen storage recharge box is connected to the stack inlet multi-way valve, and the stack inlet multi-way valve is connected to the hydrogen fuel cell power pack.

5. The modular hydrogen power system power pack based on solid-state hydrogen storage technology according to claim 2, characterized in that, When multiple solid-state hydrogen storage recharge boxes are provided, the valve cable interface of each solid-state hydrogen storage recharge box is connected to the hydrogen fuel cell power pack box.

6. The modular hydrogen power system power pack based on solid-state hydrogen storage technology according to claim 2, characterized in that, The FCU and the blower are arranged adjacent to each other, and both the FCU and the blower are located near the valve cable interface; a gap is provided between the support plate and the bottom of the hydrogen fuel cell power pack, and the DC power conversion output device is housed in the gap.

7. The modular hydrogen power system power pack based on solid-state hydrogen storage technology according to claim 2, characterized in that, A cooling fan is installed on the top of the closed-loop fuel cell air-cooled stack; a monitoring and operation device is installed on the outer side of the hydrogen fuel cell power pack near the fan end.

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